1 files changed, 149 insertions, 0 deletions
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
new file mode 100644
index 0000000..04ebc24
--- /dev/null
+++ b/include/linux/sunrpc/auth.h
@@ -0,0 +1,149 @@
+/*
+ * linux/include/linux/sunrpc/auth.h
+ *
+ * Declarations for the RPC client authentication machinery.
+ *
+ * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef _LINUX_SUNRPC_AUTH_H
+#define _LINUX_SUNRPC_AUTH_H
+
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+#include <linux/sunrpc/sched.h>
+#include <linux/sunrpc/msg_prot.h>
+#include <linux/sunrpc/xdr.h>
+
+#include <asm/atomic.h>
+
+/* size of the nodename buffer */
+#define UNX_MAXNODENAME	32
+
+/* Maximum size (in bytes) of an rpc credential or verifier */
+#define RPC_MAX_AUTH_SIZE (400)
+
+/* Work around the lack of a VFS credential */
+struct auth_cred {
+	uid_t	uid;
+	gid_t	gid;
+	struct group_info *group_info;
+};
+
+/*
+ * Client user credentials
+ */
+struct rpc_cred {
+	struct hlist_node	cr_hash;	/* hash chain */
+	struct rpc_credops *	cr_ops;
+	unsigned long		cr_expire;	/* when to gc */
+	atomic_t		cr_count;	/* ref count */
+	unsigned short		cr_flags;	/* various flags */
+#ifdef RPC_DEBUG
+	unsigned long		cr_magic;	/* 0x0f4aa4f0 */
+#endif
+
+	uid_t			cr_uid;
+
+	/* per-flavor data */
+};
+#define RPCAUTH_CRED_LOCKED	0x0001
+#define RPCAUTH_CRED_UPTODATE	0x0002
+
+#define RPCAUTH_CRED_MAGIC	0x0f4aa4f0
+
+/*
+ * Client authentication handle
+ */
+#define RPC_CREDCACHE_NR	8
+#define RPC_CREDCACHE_MASK	(RPC_CREDCACHE_NR - 1)
+struct rpc_cred_cache {
+	struct hlist_head	hashtable[RPC_CREDCACHE_NR];
+	unsigned long		nextgc;		/* next garbage collection */
+	unsigned long		expire;		/* cache expiry interval */
+};
+
+struct rpc_auth {
+	unsigned int		au_cslack;	/* call cred size estimate */
+	unsigned int		au_rslack;	/* reply verf size guess */
+	unsigned int		au_flags;	/* various flags */
+	struct rpc_authops *	au_ops;		/* operations */
+	rpc_authflavor_t	au_flavor;	/* pseudoflavor (note may
+						 * differ from the flavor in
+						 * au_ops->au_flavor in gss
+						 * case) */
+	atomic_t		au_count;	/* Reference counter */
+
+	struct rpc_cred_cache *	au_credcache;
+	/* per-flavor data */
+};
+#define RPC_AUTH_PROC_CREDS	0x0010		/* process creds (including
+						 * uid/gid, fs[ug]id, gids)
+						 */
+
+/*
+ * Client authentication ops
+ */
+struct rpc_authops {
+	struct module		*owner;
+	rpc_authflavor_t	au_flavor;	/* flavor (RPC_AUTH_*) */
+#ifdef RPC_DEBUG
+	char *			au_name;
+#endif
+	struct rpc_auth *	(*create)(struct rpc_clnt *, rpc_authflavor_t);
+	void			(*destroy)(struct rpc_auth *);
+
+	struct rpc_cred *	(*lookup_cred)(struct rpc_auth *, struct auth_cred *, int);
+	struct rpc_cred *	(*crcreate)(struct rpc_auth*, struct auth_cred *, int);
+};
+
+struct rpc_credops {
+	const char *		cr_name;	/* Name of the auth flavour */
+	void			(*crdestroy)(struct rpc_cred *);
+
+	int			(*crmatch)(struct auth_cred *, struct rpc_cred *, int);
+	u32 *			(*crmarshal)(struct rpc_task *, u32 *);
+	int			(*crrefresh)(struct rpc_task *);
+	u32 *			(*crvalidate)(struct rpc_task *, u32 *);
+	int			(*crwrap_req)(struct rpc_task *, kxdrproc_t,
+						void *, u32 *, void *);
+	int			(*crunwrap_resp)(struct rpc_task *, kxdrproc_t,
+						void *, u32 *, void *);
+};
+
+extern struct rpc_authops	authunix_ops;
+extern struct rpc_authops	authnull_ops;
+#ifdef CONFIG_SUNRPC_SECURE
+extern struct rpc_authops	authdes_ops;
+#endif
+
+int			rpcauth_register(struct rpc_authops *);
+int			rpcauth_unregister(struct rpc_authops *);
+struct rpc_auth *	rpcauth_create(rpc_authflavor_t, struct rpc_clnt *);
+void			rpcauth_destroy(struct rpc_auth *);
+struct rpc_cred *	rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int);
+struct rpc_cred *	rpcauth_lookupcred(struct rpc_auth *, int);
+struct rpc_cred *	rpcauth_bindcred(struct rpc_task *);
+void			rpcauth_holdcred(struct rpc_task *);
+void			put_rpccred(struct rpc_cred *);
+void			rpcauth_unbindcred(struct rpc_task *);
+u32 *			rpcauth_marshcred(struct rpc_task *, u32 *);
+u32 *			rpcauth_checkverf(struct rpc_task *, u32 *);
+int			rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, u32 *data, void *obj);
+int			rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, u32 *data, void *obj);
+int			rpcauth_refreshcred(struct rpc_task *);
+void			rpcauth_invalcred(struct rpc_task *);
+int			rpcauth_uptodatecred(struct rpc_task *);
+int			rpcauth_init_credcache(struct rpc_auth *, unsigned long);
+void			rpcauth_free_credcache(struct rpc_auth *);
+
+static inline
+struct rpc_cred *	get_rpccred(struct rpc_cred *cred)
+{
+	atomic_inc(&cred->cr_count);
+	return cred;
+}
+
+#endif /* __KERNEL__ */
+#endif /* _LINUX_SUNRPC_AUTH_H */